Camera optical lens

ABSTRACT

The present disclosure relates to the technical field of optical lens and discloses a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens, a second lens having a positive refractive power, a third lens having a negative refractive power, a fourth lens, a fifth lens and a sixth lens. The camera optical lens satisfies following conditions: 1.00≤f1/f≤20.00; and 30.00≤R1/d1≤55.00; f denotes a focal length of the camera optical lens; f1 denotes a focal length of the first lens; R1 denotes a curvature radius of an object-side surface of the first lens; and d1 denotes an on-axis thickness of the first lens. The camera optical lens can achieve a high imaging performance while obtaining a low TTL.

TECHNICAL FIELD

The present disclosure relates to the field of optical lens, particular,to a camera optical lens suitable for handheld devices, such as smartphones and digital cameras, and imaging devices, such as monitors or PClenses.

BACKGROUND

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, but in general thephotosensitive devices of camera lens are nothing more than ChargeCoupled Device (CCD) or Complementary Metal-Oxide Semiconductor Sensor(CMOS sensor), and as the progress of the semiconductor manufacturingtechnology makes the pixel size of the photosensitive devices becomesmaller, plus the current development trend of electronic productstowards better functions and thinner and smaller dimensions, miniaturecamera lens with good imaging quality therefore have become a mainstreamin the market. In order to obtain better imaging quality, the lens thatis traditionally equipped in mobile phone cameras adopts a three-pieceor four-piece lens structure. Also, with the development of technologyand the increase of the diverse demands of users, and as the pixel areaof photosensitive devices is becoming smaller and smaller and therequirement of the system on the imaging quality is improvingconstantly, the five-piece, six-piece and seven-piece lens structuregradually appear in lens designs. There is an urgent need for ultra-thinwide-angle camera lenses which with good optical characteristics andfully corrected aberration.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 1 of the present disclosure.

FIG. 2 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 1.

FIG. 3 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 1.

FIG. 4 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 1.

FIG. 5 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 2 of the present disclosure.

FIG. 6 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 5.

FIG. 7 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 5.

FIG. 8 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 5.

FIG. 9 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 3 of the present disclosure.

FIG. 10 is a schematic diagram of a longitudinal aberration of thecamera optical lens shown in FIG. 9.

FIG. 11 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 9.

FIG. 12 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 9.

DETAILED DESCRIPTION OF EMBODIMENTS

To make the objects, technical solutions, and advantages of the presentdisclosure clearer, embodiments of the present disclosure are describedin detail with reference to accompanying drawings in the following. Aperson of ordinary skill in the art can understand that, in theembodiments of the present disclosure, many technical details areprovided to make readers better understand the present disclosure.However, even without these technical details and any changes andmodifications based on the following embodiments, technical solutionsrequired to be protected by the present disclosure can be implemented.

Embodiment 1

Referring to the accompanying drawings, the present disclosure providesa camera optical lens 10. FIG. 1 shows the camera optical lens 10 ofEmbodiment 1 of the present disclosure, the camera optical lens 10includes six lenses. Specifically, the camera optical lens 10 includes,from an object side to an image side: an aperture S1, a first lens L1, asecond lens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and asixth lens L6. An optical element such as an optical filter GF can bearranged between the sixth lens L6 and an image surface Si.

The first lens L1, the second lens L2, the third lens L3, the fourthlens L4, the fifth lens L5, and the sixth lens L6 are all made ofplastic material.

The second lens has a positive refractive power, the third lens has anegative refractive power.

Here, a focal length of the camera optical lens 10 is defined as f, anda focal length of the first lens L1 is defined as f1. The camera opticallens 10 satisfies a condition of 1.00≤f1/f≤20.00, which specifies thatthe first lens L1 has a positive refractive power. If beyond the lowerspecified value, though it is beneficial for an ultra-thin lens, thefirst lens L1 has a relative strong positive refractive power and isdifficult for correcting aberration, and is not beneficial forwide-angle development of a lens. On the contrary, if beyond the upperspecified value, the first lens L1 has a relative weak positiverefractive power, which is difficult for ultra-thin development of alens. Preferably, the camera optical lens 10 further satisfies acondition of 1.45≤f1/f≤19.45.

A curvature radius of an object-side surface of the first lens L1 isdefined as R1, an on-axis thickness of the first lens L1 is defined asd1, and the camera optical lens 10 satisfies a condition of30.00≤R1/d1≤55.00, which specifies a ratio between the curvature radiusof the object-side surface of the first lens L1 and the on-axisthickness of the first lens L1. By controlling a refractive power of thefirst lens L1 within a reasonable range, correction of the aberration ofthe optical system can be facilitated. Preferably, the camera opticallens 10 further satisfies a condition of 31.90≤R1/d1≤54.50.

A total optical length from the object side surface of the first lens L1to the image surface Si of the camera optical lens along an optical axisis defined as TTL.

When the focal length f of the camera optical lens 10, the focal lengthf1 of the first lens L1, the curvature radius R1 of the object-sidesurface of the first lens L1, and the curvature radius R2 of theimage-side surface of the first lens L1 all satisfy the aboveconditions, the camera optical lens 10 has an advantage of highperformance and satisfies a design requirement of low TTL.

In an embodiment, the object-side surface of the first lens L1 is convexin the paraxial region, and the first lens L1 has a positive refractivepower.

A curvature radius R1 of an object side surface of the first lens L1 anda curvature radius R2 of an image side surface of the first lens L1satisfy a condition of −19.87≤(R1+R2)/(R1−R2)≤−0.01, which reasonablycontrols a shape of the first lens, so that the first lens mayeffectively correct system spherical aberration. Preferably, the cameraoptical lens 10 further satisfies a condition of−12.42≤(R1+R2)/(R1−R2)≤−0.01.

An on-axis thickness of the first lens L1 is defined as d1, and thecamera optical lens 10 further satisfies a condition of0.02≤d1/TTL≤0.08. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.04≤d1/TTL≤0.06.

In an embodiment, an object-side surface of the second lens L2 is convexin the paraxial region.

The focal length of the second lens L2 is defined as f2, and the cameraoptical lens 10 further satisfies a condition of 0.39≤f2/f≤1.68. Bycontrolling a positive refractive power of the second lens L2 within areasonable range, correction of the aberration of the optical system canbe facilitated. Preferably, the camera optical lens 10 further satisfiesa condition of 0.63≤f2/f≤1.34.

A curvature radius of the object-side surface of the second lens L2 isdefined as R3, a curvature radius of the image-side surface of thesecond lens L2 is defined as R4, and the camera optical lens 10 furthersatisfies a condition of −2.21≤(R3+R4)/(R3−R4)≤−0.54, which specifies ashape of the second lens L2. Within this range, a development towardsultra-thin and wide-angle lenses would facilitate correcting the problemof an on-axis aberration. Preferably, the camera optical lens 10 furthersatisfies a condition of −1.38≤(R3+R4)/(R3−R4)≤−0.67.

An on-axis thickness of the second lens L2 is defines as d3, and thecamera optical lens 10 further satisfies a condition of0.06≤d3/TTL≤0.21. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.10≤d3/TTL≤0.17.

In an embodiment, an image-side surface of the third lens L3 is concavein the paraxial region.

A focal length of the third lens L3 is defined as f3, and the cameraoptical lens 10 further satisfies a condition of −3.18≤f3/f≤−0.79. Anappropriate distribution of the refractive power leads to a betterimaging quality and a lower sensitivity. Preferably, the camera opticallens 10 further satisfies a condition of −1.98≤f3/f≤−0.98.

A curvature radius of the object-side surface of the third lens L3 isdefined as R5, a curvature radius of the image-side surface of the thirdlens L3 is defined as R6, and the camera optical lens 10 furthersatisfies a condition of 0.46≤(R5+R6)/(R5−R6)≤2.08, which specifies ashape of the third lens. This can effectively control a shape of thethird lens L3, thereby facilitating shaping of the third lens andavoiding bad shaping and generation of stress due to an the overly largesurface curvature of the third lens L3. Preferably, the camera opticallens 10 further satisfies a condition of 0.74≤(R5+R6)/(R5−R6)≤1.66.

An on-axis thickness of the third lens L3 is defined as d5, and thecamera optical lens 10 further satisfies a condition of0.02≤d5/TTL≤0.07. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.04≤d5/TTL≤0.06.

In an embodiment, an object-side surface of the fourth lens L4 is convexin the paraxial region, an image-side surface of the fourth lens L4 isconcave in the paraxial region, and the fourth lens L4 has a positiverefractive power.

A focal length of the fourth lens L4 is defined as f4, and the cameraoptical lens 10 further satisfies a condition of 2.17≤f4/f≤51.59, whichspecifies a ration between the focal length of the fourth lens L4 andthe focal length of the system. The appropriate distribution ofrefractive power makes it possible that the system has the betterimaging quality and the lower sensitivity. Preferably, the cameraoptical lens 10 further satisfies a condition of 3.48≤f4/f≤41.27.

A curvature radius of the object-side surface of the fourth lens L4 isdefined as R7, a curvature radius of the image-side surface of thefourth lens L4 is defined as R8, and the camera optical lens 10 furthersatisfies a condition of −69.21≤(R7+R8)/(R7−R8)≤−3.24, which specifies ashape of the fourth lens L4. Within this range, a development towardsultra-thin and wide-angle lens would facilitate correcting a problemlike an off-axis aberration. Preferably, the camera optical lens 10further satisfies a condition of −43.26≤(R7+R8)/(R7−R8)≤−4.04.

An on-axis thickness of the fourth lens L4 is defined as d7, and thecamera optical lens 10 further satisfies a condition of0.03≤d7/TTL≤0.09. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.04≤d7/TTL≤0.07.

In an embodiment, an object-side surface of the fifth lens L5 is concavein the paraxial region, an image-side surface of the fifth lens L5 isconvex in the paraxial region, and the fifth lens L5 has a positiverefractive power.

A focal length of the fifth lens L5 is defined as f5, and the cameraoptical lens 10 further satisfies a condition of 0.29≤f5/f≤1.20, whichcan effectively make a light angle of the camera lens gentle and reducean tolerance sensitivity. Preferably, the camera optical lens 10 furthersatisfies a condition of 0.46≤f5/f≤0.96.

A curvature radius of the object-side surface of the fifth lens L5 isdefined as R9, a curvature radius of the image-side surface of the fifthlens L5 is defined as R10, and the camera optical lens 10 furthersatisfies a condition of 0.75≤(R9+R10)/(R9−R10)≤2.80, which specifies ashape of the fifth lens L5. Within this range, a development towardsultra-thin and wide-angle lenses can facilitate correcting a problem ofthe off-axis aberration. Preferably, the camera optical lens 10 furthersatisfies a condition of 1.19≤(R9+R10)/(R9−R10)≤2.24.

An on-axis thickness of the fifth lens L5 is defined as d9, and thecamera optical lens 10 further satisfies a condition of0.05≤d9/TTL≤0.19. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.08≤d9/TTL≤0.16.

In an embodiment, an object-side surface of the sixth lens L6 is concavein the paraxial region, an image-side surface of the sixth lens L6 isconcave in the paraxial region, and the sixth lens L6 has a negativerefractive power.

A focal length of the sixth lens L6 is defined as f6, and the cameraoptical lens 10 further satisfies a condition of −1.11≤f6/f≤−0.31. Theappropriate distribution of refractive power makes it possible that thesystem has the better imaging quality and lower sensitivity. Preferably,the camera optical lens 10 further satisfies a condition of−0.70≤f6/f≤−0.39.

A curvature radius of the object-side surface of the sixth lens L6 isdefined as R11, a curvature radius of the image-side surface of thesixth lens L6 is defined as R12, and the camera optical lens 10 furthersatisfies a condition of −0.35≤(R11+R12)/(R11−R12)≤0.62, which specifiesa shape of the sixth lens L6. Within this range, a development towardsultra-thin and wide-angle lenses would facilitate correcting a problemlike aberration of the off-axis aberration. Preferably, the cameraoptical lens 10 further satisfies a condition of−0.22≤(R11+R12)/(R11−R12)≤0.50.

An on-axis thickness of the sixth lens L6 is defined as d11, and thecamera optical lens 10 further satisfies a condition of0.03≤d11/TTL≤0.13. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.05≤d11/TTL≤0.10.

In an embodiment, a combined focal length of the first lens and of thesecond lens is defined as f12, and the camera optical lens 10 furthersatisfies a condition of 0.36≤f12/f≤1.14. This can eliminate theaberration and distortion of the camera optical lens and reduce a backfocal length of the camera optical lens, thereby maintainingminiaturization of the camera optical lens. Preferably, the cameraoptical lens 10 further satisfies a condition of 0.57≤f12/f≤0.91.

In an embodiment, the total optical length TTL of the camera opticallens 10 is less than or equal to 5.06 mm, which is beneficial forachieving ultra-thin lenses. Preferably, the total optical length TTL ofthe camera optical lens 10 is less than or equal to 4.83 mm.

In an embodiment, an F number of the camera optical lens 10 is less thanor equal to 2.16. The camera optical lens has a large aperture and abetter imaging performance. Preferably, the F number of the cameraoptical lens 10 is less than or equal to 2.12.

With such designs, the total optical length TTL of the camera opticallens 10 can be made as short as possible, thus the miniaturizationcharacteristics can be maintained.

In the following, examples will be used to describe the camera opticallens 10 of the present disclosure. The symbols recorded in each examplewill be described as follows. The focal length, on-axis distance,curvature radius, on-axis thickness, inflexion point position, andarrest point position are all in units of mm.

TTL: Optical length of the camera optical lens (the total optical lengthfrom the object side surface of the first lens to the image surface ofthe camera optical lens along the optical axis) in mm.

Preferably, inflexion points and/or arrest points can be arranged on theobject-side surface and/or the image-side surface of the lens, so as tosatisfy the demand for high quality imaging. The description below canbe referred for specific implementations.

The design data of the camera optical lens 10 in Embodiment 1 of thepresent disclosure are shown in Table 1 and Table 2.

TABLE 1 R d nd νd S1 ∞  d0 = −0.030  R1 7.582  d1 = 0.217 nd1 1.5449 ν155.93 R2 9.279  d2 = 0.030 R3 1.568  d3 = 0.575 nd2 1.5449 ν2 55.93 R431.329  d4 = 0.040 R5 20.761  d5 = 0.220 nd3 1.6510 ν3 21.51 R6 3.343 d6 = 0.385 R7 6.269  d7 = 0.270 nd4 1.6510 ν4 21.51 R8 6.642  d8 =0.422 R9 −5.195  d9 = 0.587 nd5 1.5449 ν5 55.93 R10 −1.023 d10 = 0.299R11 −2.670 d11 = 0.375 nd6 1.5449 ν6 55.93 R12 1.640 d12 = 0.871 R13 ∞d13 = 0.210 ndg 1.5168 νg 64.17 R14 ∞ d14 = 0.100 In the table, meaningsof various symbols will be described as follows. S1: aperture; R:curvature radius of an optical surface, a central curvature radius for alens; R1: curvature radius of the object-side surface of the first lensL1; R2: curvature radius of the image-side surface of the first lens L1;R3: curvature radius of the object-side surface of the second lens L2;R4: curvature radius of the image-side surface of the second lens L2;R5: curvature radius of the object-side surface of the third lens L3;R6: curvature radius of the image-side surface of the third lens L3; R7:curvature radius of the object-side surface of the fourth lens L4; R8:curvature radius of the image-side surface of the fourth lens L4; R9:curvature radius of the object-side surface of the fifth lens L5; R10:curvature radius of the image-side surface of the fifth lens L5; R11:curvature radius of the object-side surface of the sixth lens L6; R12:curvature radius of the image-side surface of the sixth lens L6; R13:curvature radius of an object-side surface of the optical filter GF;R14: curvature radius of an image-side surface of the optical filter GF;d: on-axis thickness of a lens and an on-axis distance between lens; d0:on-axis distance from the aperture S1 to the object-side surface of thefirst lens L1; d1: on-axis thickness of the first lens L1; d2: on-axisdistance from the image-side surface of the first lens L1 to theobject-side surface of the second lens L2; d3: on-axis thickness of thesecond lens L2; d4: on-axis distance from the image-side surface of thesecond lens L2 to the object-side surface of the third lens L3; d5:on-axis thickness of the third lens L3; d6: on-axis distance from theimage-side surface of the third lens L3 to the object-side surface ofthe fourth lens L4; d7: on-axis thickness of the fourth lens L4; d8:on-axis distance from the image-side surface of the fourth lens L4 tothe object-side surface of the fifth lens L5; d9: on-axis thickness ofthe fifth lens L5; d10: on-axis distance from the image-side surface ofthe fifth lens L5 to the object-side surface of the sixth lens L6; d11:on-axis thickness of the sixth lens L6; d12: on-axis distance from theimage-side surface of the sixth lens L6 to the object-side surface ofthe optical filter GF; d13: on-axis thickness of the optical filter GF;d14: on-axis distance from the image-side surface to the image surfaceof the optical filter GF; nd: refractive index of the d line; nd1:refractive index of the d line of the first lens L1; nd2: refractiveindex of the d line of the second lens L2; nd3: refractive index of thed line of the third lens L3; nd4: refractive index of the d line of thefourth lens L4; nd5: refractive index of the d line of the fifth lensL5; nd6: refractive index of the d line of the sixth lens L6; ndg:refractive index of the d line of the optical filter GF; νd: abbenumber; v1: abbe number of the first lens L1; v2: abbe number of thesecond lens L2; v3: abbe number of the third lens L3; v4: abbe number ofthe fourth lens L4; v5: abbe number of the fifth lens L5; v6: abbenumber of the sixth lens L6; vg: abbe number of the optical filter GF.

Table 2 shows aspherical surface data of the camera optical lens 10 inEmbodiment 1 of the present disclosure.

TABLE 2 Conic coefficient Aspheric surface coefficients k A4 A6 A8 A10A12 A14 A16 R1  0.0000E+00 −3.8327E−02 3.4754E−02 −4.8515E−03 4.1934E−03 −3.0006E−04   1.7133E−03 −1.5150E−03 R2  0.0000E+00−2.0102E−02 2.3697E−02  3.6574E−02 −1.7080E−02 1.6353E−03 −4.5547E−04 2.7560E−03 R3 −3.6099E−01  2.7353E−02 −2.7433E−02   3.4515E−02−2.8796E−02 −2.4427E−02   3.2537E−02 −6.1599E−02 R4  0.0000E+00−1.0656E−01 1.2514E−01 −1.9155E−01  2.1389E−02 5.5079E−02 −2.4917E−03−2.6601E−02 R5 −5.0000E+01 −6.1413E−02 2.1620E−01 −2.0025E−01−2.4456E−02 6.0831E−02  1.3166E−01 −6.9649E−02 R6 −8.6971E−02 3.7397E−02 9.0204E−02  5.5882E−02 −7.1365E−02 −1.7375E−01   2.9323E−01−1.0599E−02 R7  0.0000E+00 −1.2711E−01 1.0136E−02  2.4797E−02−2.2659E−02 1.1796E−02  1.9216E−02 −3.3676E−02 R8  0.0000E+00−1.1096E−01 2.8383E−02 −2.8704E−02  2.7209E−02 2.6689E−03 −2.2497E−04−2.7871E−03 R9  5.6225E+00 −8.6763E−03 −2.8879E−02   3.9720E−02−4.5530E−02 1.7500E−02 −8.6878E−04 −2.9193E−04 R10 −4.0096E+00−4.9975E−02 2.6484E−02  1.3589E−02 −1.2169E−02 1.8070E−03  3.0310E−04−8.4818E−05 R11 −2.9394E+01 −1.0105E−01 4.1306E−02 −7.5398E−03 6.8221E−04 −6.4230E−06  −3.3028E−06  1.4445E−07 R12 −1.2354E+01−6.7418E−02 2.2905E−02 −6.2298E−03  8.2654E−04 −2.2681E−05  −7.9642E−06 8.0397E−07

Here, K is a conic coefficient, and A4, A6, A8, A10, A12, A14, and A16are aspheric surface coefficients.

IH: Image heighty=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x ¹⁶  (1)

For convenience, an aspheric surface of each lens surface uses theaspheric surfaces shown in the above formula (1). However, the presentdisclosure is not limited to the aspherical polynomials form shown inthe formula (1).

Table 3 and Table 4 show design data of inflexion points and arrestpoints of the camera optical lens 10 according to Embodiment 1 of thepresent disclosure. P1R1 and P1R2 represent the object-side surface andthe image-side surface of the first lens L1, P2R1 and P2R2 represent theobject-side surface and the image-side surface of the second lens L2,P3R1 and P3R2 represent the object-side surface and the image-sidesurface of the third lens L3, P4R1 and P4R2 represent the object-sidesurface and the image-side surface of the fourth lens L4, P5R1 and P5R2represent the object-side surface and the image-side surface of thefifth lens L5, P6R1 and P6R2 represent the object-side surface and theimage-side surface of the sixth lens L6. The data in the column named“inflexion point position” refer to vertical distances from inflexionpoints arranged on each lens surface to the optic axis of the cameraoptical lens 10. The data in the column named “arrest point position”refer to vertical distances from arrest points arranged on each lenssurface to the optical axis of the camera optical lens 10.

TABLE 3 Number(s) of Inflexion point Inflexion point Inflexion pointinflexion points position 1 position 2 position 3 P1R1 0 P1R2 0 P2R1 10.825 P2R2 1 0.165 P3R1 0 P3R2 0 P4R1 1 0.335 P4R2 3 0.355 0.965 1.165P5R1 1 1.325 P5R2 2 0.995 1.185 P6R1 1 1.375 P6R2 2 0.545 2.325

TABLE 4 Number(s) of Arrest point arrest points position 1 P1R1 0 P1R2 0P2R1 0 P2R2 1 0.295 P3R1 0 P3R2 0 P4R1 1 0.585 P4R2 1 0.615 P5R1 0 P5R20 P6R1 1 2.165 P6R2 1 1.225

FIG. 2 and FIG. 3 illustrate a longitudinal aberration and a lateralcolor with wavelengths of 470.0 nm, 550.0 nm and 650.0 nm after passingthe camera optical lens 10 according to Embodiment 1, respectively. FIG.4 illustrates a field curvature and a distortion with a wavelength of550.0 nm after passing the camera optical lens 10 according toEmbodiment 1. A field curvature S in FIG. 4 is a field curvature in asagittal direction, and T is a field curvature in a tangentialdirection.

Table 13 in the following shows various values of Embodiments 1, 2, 3and values corresponding to parameters which are specified in the aboveconditions.

As shown in Table 13, Embodiment 1 satisfies the above conditions.

In this Embodiment, an entrance pupil diameter of the camera opticallens is 1.899 mm, an image height of 1.0 H is 3.284 mm, a FOV (field ofview) in a diagonal direction is 80.10°. Thus, the camera optical lenshas a wide-angle and is ultra-thin. Its on-axis and off-axis aberrationsare fully corrected, thereby achieving excellent opticalcharacteristics.

Embodiment 2

Embodiment 2 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1, and only differencestherebetween will be described in the following.

Table 5 and Table 6 show design data of a camera optical lens 20 inEmbodiment 2 of the present disclosure.

TABLE 5 R d nd νd S1 ∞  d0 = −0.030  R1 11.070  d1 = 0.205 nd1 1.5449 ν155.93 R2 18.357  d2 = 0.030 R3 1.717  d3 = 0.659 nd2 1.5449 ν2 55.93 R4−31.024  d4 = 0.040 R5 −88.163  d5 = 0.220 nd3 1.6510 ν3 21.51 R6 3.470 d6 = 0.325 R7 4.156  d7 = 0.242 nd4 1.6510 ν4 21.51 R8 5.454  d8 =0.426 R9 −4.061  d9 = 0.597 nd5 1.5449 ν5 55.93 R10 −1.172 d10 = 0.504R11 −4.004 d11 = 0.308 nd6 1.5449 ν6 55.93 R12 1.657 d12 = 0.735 R13 ∞d13 = 0.210 ndg 1.5168 νg 64.17 R14 ∞ d14 = 0.100

Table 6 shows aspherical surface data of each lens of the camera opticallens 20 in Embodiment 2 of the present disclosure.

TABLE 6 Conic coefficient Aspheric surface coefficients k A4 A6 A8 A10A12 A14 A16 R1  0.0000E+00 −4.2640E−02 1.0766E−01 −5.6949E−02 8.5429E−04 2.6960E−02 −1.4755E−02  9.1346E−04 R2  0.0000E+00 9.9834E−03 6.8271E−02  3.5414E−02 −5.3663E−02 −2.0905E−03   2.2684E−02−3.1770E−04 R3 −1.6716E−01  4.0701E−02 −2.9471E−02   3.0271E−02−3.2432E−02 −2.4972E−02   4.0005E−02 −4.6120E−02 R4  0.0000E+00−1.2028E−01 1.3000E−01 −1.8437E−01  2.2841E−02 5.5094E−02 −2.7251E−04−2.4024E−02 R5 −1.0000E+02 −6.1587E−02 2.0814E−01 −2.0756E−01−2.5431E−02 6.2286E−02  1.2932E−01 −7.7210E−02 R6 −7.1696E−01 3.5005E−02 6.8010E−02  6.4795E−02 −6.6561E−02 −1.8421E−01   2.7222E−01−3.1351E−02 R7 −8.6976E−01 −1.2965E−01 3.2528E−02  2.2345E−02−2.9895E−02 9.8886E−03  2.4395E−02 −2.5783E−02 R8 −1.2753E+00−1.0607E−01 2.7223E−02 −2.6578E−02  2.7844E−02 2.3808E−03 −5.6733E−04−2.9365E−03 R9  7.0040E+00  1.1127E−02 −2.4061E−02   3.9945E−02−4.4457E−02 1.8215E−02 −6.4751E−04 −2.9972E−04 R10 −3.7409E+00−4.7135E−02 2.9905E−02  1.4138E−02 −1.2243E−02 1.7450E−03  2.8680E−04−8.8411E−05 R11 −3.5204E+01 −9.6468E−02 4.1015E−02 −7.6336E−03 6.5661E−04 −1.1845E−05  −3.5771E−06  3.8503E−07 R12 −1.0198E+01−6.6874E−02 2.4406E−02 −6.4196E−03  8.5022E−04 −1.9705E−05  −8.0752E−06 6.6237E−07

Table 7 and table 8 show design data of inflexion points and arrestpoints of each lens of the camera optical lens 20 lens according toEmbodiment 2 of the present disclosure.

TABLE 7 Number(s) of Inflexion point Inflexion point Inflexion pointinflexion points position 1 position 2 position 3 P1R1 0 P1R2 0 P2R1 10.845 P2R2 0 P3R1 1 0.455 P3R2 0 P4R1 1 0.425 P4R2 3 0.405 0.935 1.145P5R1 2 1.245 1.355 P5R2 2 0.925 1.285 P6R1 1 1.385 P6R2 2 0.575 2.535

TABLE 8 Number of Arrest point Arrest point arrest points position 1position 2 P1R1 0 P1R2 0 P2R1 0 P2R2 0 P3R1 1 0.735 P3R2 0 P4R1 1 0.815P4R2 2 0.715 1.105 P5R1 0 P5R2 0 P6R1 0 P6R2 1 1.355

FIG. 6 and FIG. 7 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 470.0 nm, 550.0 nm and 650.0 nm afterpassing the camera optical lens 20 according to Embodiment 2. FIG. 8illustrates afield curvature and a distortion of light with a wavelengthof 550.0 nm after passing the camera optical lens 20 according toEmbodiment 2.

As shown in Table 13, Embodiment 2 satisfies the above conditions.

In an embodiment, an entrance pupil diameter of the camera optical lensis 1.796 mm, an image height of 1.0 H is 3.284 mm, a FOV (field of view)in the diagonal direction is 81.24°. Thus, the camera optical lens has awide-angle and is ultra-thin. Its on-axis and off-axis aberrations arefully corrected, thereby achieving excellent optical characteristics.

Embodiment 3

Embodiment 3 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1, and only differencestherebetween will be described in the following.

Table 9 and Table 10 show design data of a camera optical lens 30 inEmbodiment 3 of the present disclosure.

TABLE 9 R d nd νd S1 ∞  d0 = −0.030  R1 7.941  d1 = 0.235 nd1 1.5449 ν155.93 R2 −8.208  d2 = 0.030 R3 2.632  d3 = 0.631 nd2 1.5449 ν2 55.93 R4−24.393  d4 = 0.040 R5 72.110  d5 = 0.220 nd3 1.6510 ν3 21.51 R6 2.911 d6 = 0.338 R7 4.009  d7 = 0.253 nd4 1.6510 ν4 21.51 R8 6.090  d8 =0.513 R9 −4.169  d9 = 0.438 nd5 1.5449 ν5 55.93 R10 −1.264 d10 = 0.516R11 −2.046 d11 = 0.400 nd6 1.5449 ν6 55.93 R12 2.929 d12 = 0.677 R13 ∞d13 = 0.210 ndg 1.5168 νg 64.17 R14 ∞ d14 = 0.100

Table 10 shows aspherical surface data of each lens of the cameraoptical lens 30 in Embodiment 3 of the present disclosure.

TABLE 10 Conic coefficient Aspherical surface coefficients k A4 A6 A8A10 A12 A14 A16 R1 0.0000E+00 −1.3842E−01 1.8071E−01 −3.2629E−02−3.2656E−03 −3.7657E−03 −4.3633E−02   3.5317E−02 R2 0.0000E+00 1.9069E−02 1.2613E−01  3.8551E−02 −8.7913E−02 −8.3792E−03 2.3771E−02 1.3720E−02 R3 1.8950E+00  1.3389E−01 −4.2539E−02   1.2310E−02−3.8091E−02 −2.3719E−02 4.4438E−02 −3.0075E−02 R4 0.0000E+00 −1.1704E−011.4322E−01 −1.8807E−01  1.4543E−02  5.6687E−02 1.0541E−02 −2.5243E−02 R50.0000E+00 −5.2528E−02 1.9058E−01 −2.1359E−01 −2.1990E−02  6.8345E−021.2979E−01 −8.2812E−02 R6 −1.6815E+00   3.0806E−02 5.3228E−02 5.3929E−02 −5.6305E−02 −1.7256E−01 2.7355E−01 −4.3902E−02 R7 1.4790E+00−1.2299E−01 3.1923E−02  1.3574E−02 −3.2384E−02  1.1446E−02 2.7637E−02−2.4266E−02 R8 3.1200E+00 −9.8439E−02 1.7922E−02 −2.6705E−02  2.8990E−02 2.8236E−03 −6.1558E−04  −3.0578E−03 R9 6.8715E+00  1.1297E−02−2.9792E−02   3.8321E−02 −4.4290E−02  1.8472E−02 −6.3672E−04 −4.0938E−04 R10 −3.9135E+00  −3.8840E−02 2.8689E−02  1.3732E−02−1.2298E−02  1.7576E−03 3.1102E−04 −7.3602E−05 R11 −1.3649E+01 −9.5591E−02 4.1313E−02 −7.5597E−03  6.7013E−04 −1.0251E−05 −3.6599E−06  2.8915E−07 R12 −1.2745E+01  −6.7113E−02 2.4080E−02 −6.4858E−03 8.4380E−04 −1.9648E−05 −7.9270E−06   7.0249E−07

Table 11 and Table 12 show design data inflexion points and arrestpoints of the respective lenses in the camera optical lens 30 accordingto Embodiment 3 of the present disclosure.

TABLE 11 Number(s) of Inflexion point Inflexion point Inflexion pointinflexion points position 1 position 2 position 3 P1R1 2 0.355 0.465P1R2 1 0.395 P2R1 1 0.875 P2R2 0 P3R1 2 0.175 0.355 P3R2 0 P4R1 1 0.455P4R2 3 0.395 0.955 1.145 P5R1 1 1.275 P5R2 2 0.895 1.335 P6R1 1 1.315P6R2 2 0.575 2.415

TABLE 12 Number of Arrest point arrest points position 1 P1R1 0 P1R2 10.595 P2R1 0 P2R2 0 P3R1 0 P3R2 0 P4R1 1 0.855 P4R2 1 0.685 P5R1 0 P5R20 P6R1 0 P6R2 1 1.165

FIG. 10 and FIG. 11 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 470.0 nm, 550.0 nm and 650.0 nm afterpassing the camera optical lens 30 according to Embodiment 3. FIG. 12illustrates a field curvature and a distortion of light with awavelength of 550.0 nm after passing the camera optical lens 30according to Embodiment 3.

Table 13 in the following lists values corresponding to the respectiveconditions in an embodiment according to the above conditions.Obviously, the embodiment satisfies the above conditions.

In an embodiment, an entrance pupil diameter of the camera optical lensis 1.866 mm, an image height of 1.0 H is 3.284 mm, a FOV (field of view)in the diagonal direction is 78.82°. Thus, the camera optical lens has awide-angle and is ultra-thin. Its on-axis and off-axis aberrations arefully corrected, thereby achieving excellent optical characteristics.

TABLE 13 Parameters and conditions Embodiment 1 Embodiment 2 Embodiment3 f 3.837 3.772 3.919 f1 72.523 50.479 7.417 f2 2.998 2.996 4.379 f3−6.092 −5.074 −4.621 f4 131.960 24.730 17.026 f5 2.217 2.808 3.148 f6−1.802 −2.102 −2.142 f12 2.907 2.849 2.788 f1/f 18.90 13.38 1.89 R1/d134.94 54.00 33.79 FNO 2.02 2.10 2.10

It can be appreciated by one having ordinary skill in the art that thedescription above is only embodiments of the present disclosure. Inpractice, one having ordinary skill in the art can make variousmodifications to these embodiments in forms and details withoutdeparting from the scope of the present disclosure.

What is claimed is:
 1. A camera optical lens comprising, from an objectside to an image side: a first lens having a positive refractive power;a second lens having a positive refractive power; a third lens having anegative refractive power; a fourth lens having a positive refractivepower; a fifth lens having a positive refractive power; and a sixth lenshaving a negative refractive power; wherein the camera optical lens hasa total of six lenses; wherein the camera optical lens satisfies thefollowing conditions:1.00≤f1/f≤20.00;30.00≤R1/d1≤55.00; andTTL≤5.06; Where f denotes a focal length of the camera optical lens; f1denotes a focal length of the first lens; R1 denotes a curvature radiusof an object-side surface of the first lens; d1 denotes an on-axisthickness of the first lens; and TTL denotes a total optical length fromthe object-side surface of the first lens to an image surface of thecamera optical lens along an optical axis.
 2. The camera optical lensaccording to claim 1 further satisfying the following conditions:1.45≤f1/f≤19.45; and31.90≤R1/d1≤54.50.
 3. The camera optical lens according to claim 1,wherein the first lens comprises an object-side surface being convex inthe paraxial region; and the camera optical lens further satisfies thefollowing conditions:−19.87≤(R1+R2)/(R1−R2)≤−0.01; and0.02≤d1/TTL≤0.08; where R2 denotes a curvature radius of an image-sidesurface of the first lens.
 4. The camera optical lens according to claim3 further satisfying the following conditions:−12.42≤(R1+R2)/(R1−R2)≤−0.01; and0.04≤d1/TTL≤0.06.
 5. The camera optical lens according to claim 1,wherein the second lens comprises an object-side surface being convex ina paraxial region; and the camera optical lens further satisfies thefollowing conditions:0.39≤f2/f≤1.68;−2.21≤(R3+R4)/(R3−R4)≤−0.54; and0.06≤d3/TTL≤0.21; where f2 denotes a focal length of the second lens; R3denotes a curvature radius of the object-side surface of the secondlens; R4 denotes a curvature radius of an image-side surface of thesecond lens; d3 denotes an on-axis thickness of the second lens.
 6. Thecamera optical lens according to claim 5 further satisfying thefollowing conditions:0.63≤f2/f≤1.34;−1.38≤(R3+R4)/(R3−R4)≤−0.67; and0.10≤d3/TTL≤0.17.
 7. The camera optical lens according to claim 1,wherein the third lens comprises an image-side surface being concave inthe paraxial region, and the camera optical lens further satisfies thefollowing conditions:−3.18≤f3/f≤−0.79;0.46≤(R5+R6)/(R5−R6)≤2.08; and0.02≤d5/TTL≤0.07; where f3 denotes a focal length of the third lens; R5denotes a curvature radius of an object-side surface of the third lens;R6 denotes a curvature radius of the image-side surface of the thirdlens; d5 denotes an on-axis thickness of the third lens.
 8. The cameraoptical lens according to claim 7 further satisfying the followingconditions:−1.98≤f3/f≤−0.98;0.74≤(R5+R6)/(R5−R6)≤1.66; and0.04≤d5/TTL≤0.06.
 9. The camera optical lens according to claim 1,wherein the fourth lens comprises an object-side surface being convex ina paraxial region and an image-side surface being concave in theparaxial region, and the camera optical lens further satisfies thefollowing conditions:2.17≤f4/f≤51.59;−69.21≤(R7+R8)/(R7−R8)≤−3.24; and0.03≤d7/TTL≤0.09; where f4 denotes a focal length of the fourth lens; R7denotes a curvature radius of the object-side surface of the fourthlens; R8 denotes a curvature radius of the image-side surface of thefourth lens; d7 denotes an on-axis thickness of the fourth lens.
 10. Thecamera optical lens according to claim 9 further satisfying thefollowing conditions:3.48≤f4/f≤41.27;−43.26≤(R7+R8)/(R7−R8)≤−4.04; and0.04≤d7/TTL≤0.07.
 11. The camera optical lens according to claim 1,wherein the fifth lens comprises an object-side surface being concave ina paraxial region and an image-side surface being convex in the paraxialregion, and the camera optical lens further satisfies the followingconditions:0.29≤f5/f≤1.20;0.75≤(R9+R10)/(R9−R10)≤2.80; and0.05≤d9/TTL≤0.19; where f5 denotes a focal length of the fifth lens; R9denotes a curvature radius of the object-side surface of the fifth lens;R10 denotes a curvature radius of the image-side surface of the fifthlens; d9 denotes an on-axis thickness of the fifth lens.
 12. The cameraoptical lens according to claim 11 further satisfying the followingconditions:0.46≤f5/f≤0.96;1.19≤(R9+R10)/(R9−R10)≤2.24; and0.08≤d9/TTL≤0.16.
 13. The camera optical lens according to claim 1,wherein the sixth lens comprises an object-side surface being concave ina paraxial region and an image-side surface being concave in theparaxial region, and the camera optical lens further satisfies thefollowing conditions:−1.11≤f6/f≤−0.31;−0.35≤(R11+R12)/(R11−R12)≤0.62; and0.03≤d11/TTL≤0.13; where f6 denotes a focal length of the sixth lens;R11 denotes a curvature radius of the object-side surface of the sixthlens; R12 denotes a curvature radius of the image-side surface of thesixth lens; d11 denotes an on-axis thickness of the sixth lens.
 14. Thecamera optical lens according to claim 13 further satisfying thefollowing conditions:−0.70≤f6/f≤−0.39;−0.22≤(R11+R12)/(R11−R12)≤0.50; and0.05≤d11/TTL≤0.10.
 15. The camera optical lens according to claim 1further satisfying the following condition:0.36≤f12/f≤1.14; where f12 denotes a combined focal length of the firstlens and the second lens.
 16. The camera optical lens according to claim15 further satisfying the following condition:0.57≤f12/f≤0.91.
 17. The camera optical lens according to claim 1,further satisfying the following condition:TTL≤4.83.
 18. The camera optical lens according to claim 1, wherein an Fnumber of the camera optical lens is less than or equal to 2.16.
 19. Thecamera optical lens according to claim 18, wherein the F number of thecamera optical lens is less than or equal to 2.12.